<!DOCTYPE html>
<html>
<head>
<title>Serpentine Layout</title>
<!-- Copyright 1998-2016 by Northwoods Software Corporation. -->
<meta charset="UTF-8">
<script src="go.js"></script>
<link href="../assets/css/goSamples.css" rel="stylesheet" type="text/css" />  <!-- you don't need to use this -->
<script src="goSamples.js"></script>  <!-- this is only for the GoJS Samples framework -->
<script src="SerpentineLayout.js"></script>

<script id="code">
  function init() {
    if (window.goSamples) goSamples();  // init for these samples -- you don't need to call this
    var $ = go.GraphObject.make;

    myDiagram =
      $(go.Diagram, "myDiagramDiv",  // create a Diagram for the DIV HTML element
        {
          initialContentAlignment: go.Spot.Center,
          isTreePathToChildren: false,  // links go from child to parent
          layout: $(SerpentineLayout)  // defined in SerpentineLayout.js
        });

    myDiagram.nodeTemplate =
      $(go.Node, go.Panel.Auto,
        $(go.Shape, { figure: "RoundedRectangle", fill: "white" },
          new go.Binding("fill", "color")),
        $(go.TextBlock, { margin: 4 },
          new go.Binding("text", "key")));

    myDiagram.linkTemplate =
      $(go.Link, go.Link.Orthogonal,
        { corner: 5 },
        $(go.Shape),
        $(go.Shape, { toArrow: "Standard" }));

    var model = new go.TreeModel();
    model.nodeParentKeyProperty = "next";
    model.nodeDataArray = [
      { key: "Alpha", next: "Beta", color: "coral" },
      { key: "Beta", next: "Gamma", color: "tomato" },
      { key: "Gamma", next: "Delta", color: "goldenrod" },
      { key: "Delta", next: "Epsilon", color: "orange" },
      { key: "Epsilon", next: "Zeta", color: "coral" },
      { key: "Zeta", next: "Eta", color: "tomato" },
      { key: "Eta", next: "Theta", color: "goldenrod" },
      { key: "Theta", next: "Iota", color: "orange" },
      { key: "Iota", next: "Kappa", color: "coral" },
      { key: "Kappa", next: "Lambda", color: "tomato" },
      { key: "Lambda", next: "Mu", color: "goldenrod" },
      { key: "Mu", next: "Nu", color: "orange" },
      { key: "Nu", next: "Xi", color: "coral" },
      { key: "Xi", next: "Omicron", color: "tomato" },
      { key: "Omicron", next: "Pi", color: "goldenrod" },
      { key: "Pi", next: "Rho", color: "orange" },
      { key: "Rho", next: "Sigma", color: "coral" },
      { key: "Sigma", next: "Tau", color: "tomato" },
      { key: "Tau", next: "Upsilon", color: "goldenrod" },
      { key: "Upsilon", next: "Phi", color: "orange" },
      { key: "Phi", next: "Chi", color: "coral" },
      { key: "Chi", next: "Psi", color: "tomato" },
      { key: "Psi", next: "Omega", color: "goldenrod" },
      { key: "Omega", color: "orange" }
    ];
    myDiagram.model = model;
  }
</script>
</head>
<body onload="init()">
<div id="sample">
  <div id="myDiagramDiv" style="border: solid 1px blue; width:100%; height:500px; min-width: 200px"></div>
  <p>
  This sample demonstrates a custom Layout, SerpentineLayout, which assumes the graph consists of a chain of nodes.
  The layout is defined in its own file, as <a href="SerpentineLayout.js">SerpentineLayout.js</a>.
  </p>
  <p>
  It also has <a>Layout.isViewportSized</a> set to true, so that resizing the Diagram DIV will automatically re-layout.
  </p>
</div>
</body>
</html>
